Is there anything new for people with aura but not a full migraine afterward?

I am in a stage where I only get an aura. However these auras are still often enough to be disturbing and have changed as I have gotten older.
I used to suffer the aura as a warning that the pain would follow. Now I just have the aura and a headache that an over the counter pain killer can easily handle and my day continues. But at 20 minutes each time, it still is a bother in my life. I am taking 100 mg Topamax each night as prescribed by a neurologist and avoiding chocolate and aged cheeses but none of these has really made a great difference, and the Topamax messes with my memory. I really would like to know if anything has come on the market in the last five years that has made a difference? Thank you all!